A Digimon D-Tector Digivice with included D-Tector card game. The card game is not on database and may be accepted soon. The D-tector is sorta like a Tamagochi, at least the initial versions were, but this one (Season Four) is apparently a bit more complex. It's supposed to have a scanner that detects TV motion (or something) a pedometer which after a certain amount of steps activates events. and you can use it to fight Digimon for another player with his own Digivice.The D-Tector uses info scanned from the card game to add Digimon to its database (the box came with cheats from the interwebs, so I don't even need to get additional cards anyway.)

It's seems to be kinda rare, not a lot of info out there, and the prices I saw are 80-100 bucks, so it was a very good deal. I got the LBOW for the Yu-Gi-Oh dice game, but the real deal was this.

The card game is rather simple, uses War and Rock, Paper, Scissors to battle with either 10 (beginner) or 60 (advanced) card decks.